Combination-tool.



1). BARNES & e. W. HUNT.

GOMBINATION TOOL. APPLICATION FILED APR. 26, 1907.

Patented Oct. 6,1908.

2 SHEETS-SHEET 1.

I fimb/ mu zaM/IVI/E/VTORS ATTORNEY DLBARNBS & C. W. HUNT.

COMBINATION TOOL.

APPLICATION FILED APR 20. 1907.

Patented Oct. 6, 1908.

2 SHEETS-SHEET 2.

[/5 N TOR S Raw/9m WITNESSES.

fih/M y ATTORNEY UNITED STATES PATENT OFFICE.

DAVID' BARNES AND CLARENCE W. HUNT, OF O SSI NI-NG, NEW, YORK; SAID HUNT ASSIGNOR TO SAID BARNES.

bonme'no'n-moox...

To all whom it may'concem:

Beit' known that we, DAVID BARNES and CLARENCE W. Hum, citizens of the United States, and residents of Ossining, in the county of 'Westchester' and State of New York, have invented certain new'and useful Im rovements in Combination Tools, of WhlCll the following is a,specification..-

Our invention relates to. a combination tool of the breast drill ty e and in which means are provided Where y in giving the operating handle a continuous rotation, either continuous rotation in one direction, oralternate rotation in opposite directions of the toolspindle may be obtained.

For this pur ose our invention consists essentially of aireast-drill having in addition to'the usual actuating mechanism forimparting continuous rotation to a tool, means to throw this mechanism out of engagement and to throw other mechanism into engagement, whereby an alternate rotation of the said tool may be obtained with the same continuous rotation of the operating handle of said breast drill.

The nature of our invention'will be best understood in connection withthe accompa-' nying drawings'in which -operating handle 13.

A'tool spind1e14 passes through-the frame .10 and one end is provided with means for attaching a suitable .tool or tool holder (not shown).

The .miter actuatin gear wheel 12 is adapted as in the usua form of breast-drill to engage with a similar miter gear wheel 15.

keye to the tool spindle 14, whereby in turning the handle 13 in either direction a correspondin rotation of the spindle 14 is obtained. Th arranged on the spindle 14 and are adapted under certain conditions to engage with the segmental gear wheel 18 upon the inner side of the wheel 12. The teeth of said gear wheel extend over less than one-half the cir- Specification of Letters Patent. Application filed April 26, 1907. Serial No. 370,486.

e-gear-.wheels 16 and 17 are Patented Oct. e, 1908.

l cumference as shown. The spindle isfurther provided with two peripheral grooves 19 and 20 into either of which a stop 21 is adapted to be fitted, being'screwed through the frame 10, as shown, and provided at its outer end with a handle by. which the tool is held andsteadied. The operation of our combination tool is as follows: For ordinary purposes as drilling, screwing, etc., in WhICh a continuous rotation in onedirection only is required, the tool operates in the usual manner, the gear wheel 12'engaging the ear wheel 15 and the teeth of gear wheel 18 eing in this position inoperative. In this case the stop 21 fits the lower groove 20 and the gear wheels 16 and 17 are raised out of engagementwith the segmental wheel 18. 7 Should it be desired to have an alternate rotation of the tool as for purposes such as the scraping or grinding of valves and valve seats, the stop 21 is removed bodily until the stop 21 fits the groove 19, as shown in Fi 1. This permits the teeth of gear whee 18 to engage with the gear wheels 16 or 17, so that in turning the handle 13 the said gear wheel 18 engages first with one of the two gear wheels 16 and 17 and then with the other. In so doing the s indle 14 is first turned in one direction whi e one of the gear wheels 16 or 17 is in engagement; and then in the opposite direction while the handle 13, however, is always in the same direction, that is, it has a continuous rotation in one direction while the spindle 14 rotates alternately in opposite directions. We claim;

A combination breast drill and a valve grinder, comprising: a frame provided with an up er, lower and intermediate bearing; a vertlcally adjustable toolspindle mounted therein, and provided at its upper end with a brace; an n per and a lower gear wheel secured to sai spindle; a third gear wheel secured to said spindle, said spindle having two peri heral grooves; a removable stop passin t rough the'intermediate bearing of said ame .and adapted to engage said peripheral grooves; an actuating gear wheel, and an actuating handle attached thereto, said e'ar'wheel being adapted toengage said third gear wheel secured to the spindle when from the groove 20 and the spindle lowered other is in engagement. The rotation of the a the said-stop engages one of said peripheral Westchester; and State of New York, this grooves; and a segmental gear in connection eight day of April 1907;

with said actuating gear Wheel adapted to alternately enga e with said upper and DAVID BARNES lower gear whee s secured to said spindle GLARENCYE HUNT when the said stop engages the other of said Witnesses: peripheral grooves, THOMAS M. SMITH,

Signed at Ossining, in the county of I FBAN K T. YOUNG. 

